Heritage

Tobias' parents are Carridee Stonem (nee Mcnair) and Richard Stonem.

His grandfather is Walden Mcnair, known for being a loyal follower of Lord Voldemort in the First Wizarding War. Little is known about Jay's grandmother, there is no record of her identity and it is likely Walden kept it a secret in order to ensure no harm would come to her while he took up his active position as a Death Eater.
Following Voldemort's defeat, like many others, Walden claimed he was under the Imperius Curse to avoid going to Azkaban. After his defence was accepted, Mcnair worked for the Ministry of Magic, on the Committee for the Disposal of Dangerous Creatures, a job well suited for his violent and vicious mind. He was set to execute Buckbeak, the Hippogriff owned by Rubeus Hagrid, but it escaped. It was no surprise that upon the Dark Lord's return, Walden re-joined the Death Eaters, after apologising at Voldemort's feet the Dark Lord allowed him to re-join his ranks.
In addition to this, Walden made an unbreakable vow with Voldemort that a member of his family would always have a place by the Dark Lord's side.

Walden and his wife had two daughters- Carridee and Lucinda, both whom attended Beauxbatons in France. It was clear from the beginning that the youngest sister was his favourite. Carridee was blonde, had a heart of gold, and doted upon her parents.
Lucinda however looked and acted more like her father. She inherited many of his traits; jet black hair and harsh features. She enjoyed bullying the other students and it was not long into her teenage years before she was begging her father to take her to meet other Death Eaters.
Eventually Lucinda was introduced to Wilkes, an active Death Eater and friend of Mcnair's. They married and had children who were promptly put up for adoption (notably Brianna Robins, who was adopted by the Robins family.)

Meanwhile Carridee was involved in an arranged marriage, organised by her father. Her husband was not a Death Eater, and it is thought that Walden Mcnair must have had a little compassion to want the best for his favourite daughter. He chose a pure blood Durmstrang graduate, originally from Suffolk. Richard Stonem was a quiet boy, who lived with his parents in a manor house in the countryside. He was introverted, visited home little and preferred the company of his few friends at the infamous Scandinavian boys institute. Once married, Richard and Carridee moved to a hidden manor home in the centre of London and had three children.

Childhood

Tobias was born on May 24th 1990. From the moment he could walk, Tobias displayed symptoms of having magical powers well beyond his years, often dangerously so. Death Eaters frequently visited the London home as a safe house and meeting place, and took an interest in the toddler's obvious intelligence. From an early age they began teaching him spells with their own wands. His father protests that the Death Eaters are not good for Tobias, but Carridee assures him that it was normal in a pureblood family for more attention to be paid to the elder children than usual. He would often practice minor curses on the animals he found around Stonem manor, and once dead he would bring them into the home to show his parents proudly.
He would show catatonic behaviour, holding rigid poses for hours on end, and spoke mostly to himself in a language made up of gibberish.
Tobias grows stronger and more of a problem to his mother, who after having to explain to her husband why their oldest house elf had both his legs broken, and begins to feel hopeless in his upbringing.
He spends time mostly practicing the spells and potions taught to him by the likes of the Carrows, and becomes a favourite of Bellatrix Lestrang, who spots a weapon within Tobias- something she failed with her own nephew, Draco Malfoy.
Too dangerous for school, and approaching his teens, Tobias took lessons from Death Eaters, becoming highly skilled in wandless and wordless magic, and develops his love for charms. He gains a fascination for potions, which his parents happily fund, believing that it will take his mind off the darker thoughts beginning to fill his head.

After having his father miss his birthday, and having received a letter from the Headmaster of Hogwarts yet again enforcing the importance of an education for the young Master Stonem, Tobias finally cracks. Bitter both from the normal upbringing his parents have denied him, and his father's obvious love for his siblings, Toby poisons 21 local muggles in Camden, resulting in both muggle and magical press releases. Tobias is committed to the high risk wing of St Mungos at age 14.

Tobias is diagnosed as having a disability of the mind which results in a disturbance of his mental functioning. He suffers from a psychosis which is similar to that of a paranoid schizophrenic, though in addition to his unstable mind he has an exceptional flair for charms and dark magic. It is on his record that his violent tendencies stem from witnessing Death Eater activity within his home from an impossibly and brutally young age.

On 20th December 2006, Tobias performs the Imperius curse both windlessly and wordlessly, and escapes the hospital. He performs the curse on 4 staff, who usher him out of the hospital and go to the kitchens to prepare a meal. In the time it took four people to prepare a quick pasta dish and set the table, Tobias had killed 22 muggles in a school some distance away, as well as a guinea pig 'Fudge' – a point which was always particularly emphasized during Tobias' conjunction and one that he finds somewhat humourous.
Three months later, Tobias- aged 17, is pulled out from under a truck by the Irish Ministry of Magic after sneaking onto a boat from the East coast of England to go to Ireland. It is unknown he killed or hurt on the way as any magic he performed could not be traced due to not owning a wand.

He is immediately sent to Azkaban, where he spends two years suffering halluncinations which cause him to make up intense and real scenarios in his mind which he mistakes for reality. He is only minutely able to differentiate between real life and the colourful illusions he creates to keeps the Dementors away.

Two years later, Albus Dumbledore wins a case which grants Tobias' release from under his complete guidance. Dumbledore is convinced that giving Tobias the upbringing he has always craved will be able to successfully rehabilitate him. The public and press do not agree, and a long legal process and evaluation of Dumbledore's sanity ensues.
If Tobias hurts, or attempts to endanger any other witch, wizard or creature at Hogwarts School of Witchcraft and Wizardry he will be thrown back into Azkaban for the rest of his life.

Later life

Tobias finds life at Hogwarts pleasant and in time makes one or two friends. He is finally able to bond with his younger brother Jason- who has transferred from Durmstrang to Hogwarts to further his successful quidditch career.
Though he is not violent, he is as obsessed as ever with dark magic and spends much of his time in the restricted section of the library, reading and improving his knowledge. The lessons are simple for him, but he appreciates being in a classroom and some sense of normality.

After his year at Hogwarts, he worked for a further year as a guidance counsellor. At first, he struggled to differentiate between the students who needed someone to talk to, and those in his presence out of morbid curiosity. His sessions were often supervised and he provided a memory after each meeting, despite this he enjoyed listening to the problems of the students.

Presently Tobias has a part time job in the Ministry for Magic's Archive Department, which satisfies his constant need for magical information. Due to him not being able to leave the country, he is building a relationship with his only sister slowly, who he sees only when she takes holidays from Beauxbatons in France. He frequently supports his brother at quidditch matches and looks forward to becoming an Uncle.